1 APIview的as_view
-内部还是执行了View的闭包函数view
-禁用掉了csrf
-一切皆对象，函数也是对象 函数地址.name=lqz
2 原生View类中过的as_view中的闭包函数view
-本质执行了self.dispatch(request, *args, **kwargs)，执行的是APIView的dispatch
3 APIView的dispatch
def dispatch(self, request, *args, **kwargs):
# DRF的Request类的对象，内部有request._request,是原生request
request = self.initialize_request(request, *args, **kwargs)
self.request = request
try:
self.initial(request, *args, **kwargs)
'''
#认证，权限，频率
self.perform_authentication(request)
self.check_permissions(request)
self.check_throttles(request)
'''
if request.method.lower() in self.http_method_names:
handler = getattr(self, request.method.lower(),
self.http_method_not_allowed)
else:
handler = self.http_method_not_allowed
response = handler(request, *args, **kwargs)
except Exception as exc:
# 全局的异常捕获
response = self.handle_exception(exc)
# 把视图函数(类)返回的response，又包装了一下
self.response = self.finalize_response(request, response, *args, **kwargs)
return self.response